US4660668A - Self-propelled agricultural machine - Google Patents

Self-propelled agricultural machine Download PDF

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Publication number
US4660668A
US4660668A US06/789,766 US78976685A US4660668A US 4660668 A US4660668 A US 4660668A US 78976685 A US78976685 A US 78976685A US 4660668 A US4660668 A US 4660668A
Authority
US
United States
Prior art keywords
transmission case
transmission
agricultural machine
control
motion transmitting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
US06/789,766
Other languages
English (en)
Inventor
Tokio Horikawa
Mitsuaki Sawai
Hisatake Fujioka
Nobumasa Kawashima
Nobuhide Yanagawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kubota Corp
Original Assignee
Kubota Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kubota Corp filed Critical Kubota Corp
Assigned to KUBOTA, LTD., 47-GO, 2-BAN, 1-CHOME, SIKITSUHIGASHI, NANIWA-KU, OSAKA-SHI, OSAKA-FU, JAPAN reassignment KUBOTA, LTD., 47-GO, 2-BAN, 1-CHOME, SIKITSUHIGASHI, NANIWA-KU, OSAKA-SHI, OSAKA-FU, JAPAN ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: FUJIOKA, HISATAKE, HORIKAWA, TOKIO, KAWASHIMA, NOBUMASA, SAWAI, MITSUAKI, YANAGAWA, NOBUHIDE
Application granted granted Critical
Publication of US4660668A publication Critical patent/US4660668A/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D51/00—Motor vehicles characterised by the driver not being seated
    • B62D51/004—Motor vehicles characterised by the driver not being seated characterised by the transmission

Definitions

  • This invention relates to a self-propelled agricultural machine steered by an operator walking behind the machine.
  • the machine comprises a control section disposed laterally of a transmission case to control a drive transmission mechanism.
  • control section for controlling the drive transmission mechanism is openly exposed to the ambient. Therefore, when the machine is used to operate along rows of crop or near shrubs and trees, leaves and stalks of the crop or branches of the shrubs and trees tend to enter the part of the machine where the control section is mounted and become entangled or caught in the control section. This results in such problems as damage to the crop and an inadvertent switching of the drive transmission mechanism.
  • the object of this invention is to provide a self-propelled agricultural machine having means to protect the control section for controlling the drive transmission from contact by crops, shrubs, trees and the like.
  • a self-propelled agricultural machine comprises a transmission case housing a transmission mechanism, transmission means disposed laterally of the transmission case to transmit engine output to the transmission mechanism, cover means having an outer lateral face and covering the transmission means, control means for controlling the transmission mechanism, the control means including motion transmitting means disposed laterally of the transmission case and operatively connected to a manually operable control lever, and a fuel tank including a bottom face, wherein the motion transmitting means is disposed between the cover means and the transmission case and has an outer lateral side thereof covered by the outer lateral face of the cover means, and wherein the fuel tank is mounted on top of the transmission case such that the bottom face of the tank extends above the motion transmitting means.
  • the motion transmitting means of the control means in the above construction has the outer lateral side thereof covered by the cover of the transmission means and a top portion thereof covered by the fuel tank. Therefore, the motion transmitting means is protected from crops, shrubs, trees and the like.
  • the construction since the cover of the transmission means and the fuel tank are used to cover the motion transmitting means, the construction requires no additional cover exclusively for the motion transmitting means. This feature has the advantage of simplicity and low manufacturing cost of the construction.
  • FIG. 1 is a partly broken away side view of a control section for controlling a drive transmission
  • FIG. 2 is a plan view of the control section
  • FIG. 3 is a partly broken away rear view of the control section
  • FIG. 4 is a side elevation of a walk-behind type self-propelled agricultural machine.
  • a walk-behind type self-propelled agricultural machine includes a transmission case 3 constituting a machine frame.
  • the transmission case 3 is supported by a pair of right and left drive wheels 1.
  • the machine includes an engine 2 disposed forwardly of the transmission case 3, and a steering handle 4 extending upwardly and rearwardly of the transmission case 3.
  • the steering handle 4 is attached to the transmission case 3 to be pivotable on a vertical axis P1 to switch between a forward facing position and a backward facing position.
  • the transmission case 3 carries a hitch 5 on a rear face thereof, and through this hitch a rotary plow or various other working implements may be coupled to the transmission case 3.
  • the rotary plow or other implements may also be coupled to an axle 6.
  • the transmission case 3 houses a drive gear transmission 7 adapted to provide two forward speeds and one backward speed.
  • the gear transmission 7 includes an input shaft 7a projecting laterally outwardly of the transmission case 3.
  • the input shaft 7a is operatively connected to a rear pulley of a belt type transmission device 13 extending forwardly outside and along a lateral wall of the transmission case 3, a front pulley of the transmission device 13 being operatively connected to the engine 2.
  • output of the engine 2 is transmitted through the belt type transmission device 13 to the gear transmission 7 disposed rearwardly of the engine 2.
  • the input shaft 7a of the gear transmission 7 carries a shifter slidably mounted thereon to selectively engage change speed gears and a reverse gear.
  • the shifter is operable by a shift fork connected to a control rod 8 of a control section 11.
  • the control rod 8 is axially slidable supported by the transmission case 3 and projects laterally outwardly of the transmission case 3.
  • the projecting end of the control rod 8 is connected to a motion transmitting mechanism constituting part of the control section 11.
  • the motion transmitting mechanism includes a member 8a attached to the projecting end of the control rod 8 and carrying an engaging pin, and an engagement member engaged by the engaging pin. Rearwardly of the engagement member there is provided a rotary member 9a attached to the transmission case 3 through a bracket 10 to be rotatable on a vertical sxis P2, and the engagement member is connected to this rotary member 9a.
  • the engagement member and the rotary member 9a in combination constitute a change speed arm 9.
  • the rotary member 9a of the change speed arm 9 is hollow, and a change speed lever 12 has a spline 12a fitted in the hollow rotary member 9 so as to be rotatable therewith.
  • the change speed lever 12 carries a stopper at an extreme end thereof to prevent the lever 12 from pulling out of the rotary member 9a. Accordingly, the speed change lever 12 is switchable between a forward facing position and a backward facing position by drawing the spline upwardly of the rotary member 9a and pivoting the change speed lever 12.
  • the speed change lever 12 is operatively connected to the shifter for the gear transmission 7 through the control section 11 as described above.
  • the gear transmission is adapted to provide two forward speeds and one backward speed by means of the change speed lever 12 manually operable by an operator.
  • the gear transmission 7 provides a first forward speed when the change speed lever 12 is operated to bring the change speed arm 9 to a first position F1.
  • the gear transmission 7 provides a second forward speed when the change speed lever 12 is operated to ring the change speed arm 9 to a second position F2.
  • the gear transmission 7 provides a backward drive when the change speed lever 12 is operated to bring the change speed arm 9 to a third position R.
  • the belt type transmission device 13 extending from the engine 2 to the input shaft 7a of the gear transmission is encased in a cover 14 which also covers a lateral side of the control section 11.
  • a fuel tank 15 is mounted on the transmission case 3 through a bracket 16.
  • the fuel tank 15 has a lateral portion located above a rear portion of the cover 14 and a rear portion located forwardly of the rotary member 9a.
  • the control section 11 has the outer lateral side covered by the cover 14 and a top portion covered by the fuel tank to protect the control rod 8 and change speed arm 9 from contact by crops, shrubs, trees and the like.
  • the machine may be used to operate along rows of crop or near shrubs and trees without possibility of parts of the crop and other growths contacting and becoming entangled in the control section for controlling the gear transmission, which is achieved by the covering function of the cover and the fuel tank.
  • Reference number 17 in FIGS. 1 and 4 denotes a bonnet covering the engine 2.
  • the cover 14 for the belt type transmission device comprises an inner cover portion 14a and an outer cover portion 14b.
  • this invention is applicable also where the cover 14 consists of the outer cover portion 14b only.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Arrangement Of Transmissions (AREA)
  • Gear-Shifting Mechanisms (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
US06/789,766 1985-01-11 1985-10-21 Self-propelled agricultural machine Expired - Fee Related US4660668A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP60003647A JPS61163067A (ja) 1985-01-11 1985-01-11 歩行型移動農機
JP60-3647 1985-01-11

Publications (1)

Publication Number Publication Date
US4660668A true US4660668A (en) 1987-04-28

Family

ID=11563268

Family Applications (1)

Application Number Title Priority Date Filing Date
US06/789,766 Expired - Fee Related US4660668A (en) 1985-01-11 1985-10-21 Self-propelled agricultural machine

Country Status (4)

Country Link
US (1) US4660668A (enrdf_load_stackoverflow)
JP (1) JPS61163067A (enrdf_load_stackoverflow)
DE (1) DE3532436A1 (enrdf_load_stackoverflow)
FR (1) FR2575894B1 (enrdf_load_stackoverflow)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4139064A (en) * 1978-02-21 1979-02-13 Deere & Company Rotary tiller and belt guard mounting therefor
US4262765A (en) * 1979-02-15 1981-04-21 Kubota, Ltd. Farm vehicle
US4567949A (en) * 1983-02-14 1986-02-04 Roper Corporation Soil tilling machine with transmission having three drive trains

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR83000E (fr) * 1960-02-03 1964-05-22 Perfectionnements aux appareils de motoculture
FR1256043A (fr) * 1960-02-03 1961-03-17 Perfectionnements aux appareils de motoculture
US3074490A (en) * 1961-04-26 1963-01-22 Burns Sam Rotary tiller
GB1318014A (en) * 1971-10-18 1973-05-23 Mametora Agriculture Machinery Power tiller of walking type
GB1360652A (en) * 1972-07-19 1974-07-17 Wolseley Eng Ltd Cultivators
US3819001A (en) * 1973-08-02 1974-06-25 C Pavelka Tractor with full swivel front section
CH604470A5 (enrdf_load_stackoverflow) * 1975-07-11 1978-09-15 Malind Finanz Anstalt

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4139064A (en) * 1978-02-21 1979-02-13 Deere & Company Rotary tiller and belt guard mounting therefor
US4262765A (en) * 1979-02-15 1981-04-21 Kubota, Ltd. Farm vehicle
US4567949A (en) * 1983-02-14 1986-02-04 Roper Corporation Soil tilling machine with transmission having three drive trains

Also Published As

Publication number Publication date
JPH0230916B2 (enrdf_load_stackoverflow) 1990-07-10
DE3532436A1 (de) 1986-07-17
FR2575894A1 (fr) 1986-07-18
FR2575894B1 (fr) 1991-04-12
JPS61163067A (ja) 1986-07-23
DE3532436C2 (enrdf_load_stackoverflow) 1988-06-16

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Legal Events

Date Code Title Description
AS Assignment

Owner name: KUBOTA, LTD., 47-GO, 2-BAN, 1-CHOME, SIKITSUHIGASH

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNORS:HORIKAWA, TOKIO;SAWAI, MITSUAKI;FUJIOKA, HISATAKE;AND OTHERS;REEL/FRAME:004471/0423

Effective date: 19850926

FEPP Fee payment procedure

Free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY

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Year of fee payment: 4

FPAY Fee payment

Year of fee payment: 8

REMI Maintenance fee reminder mailed
LAPS Lapse for failure to pay maintenance fees
FP Lapsed due to failure to pay maintenance fee

Effective date: 19990428

STCH Information on status: patent discontinuation

Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362